WP/AlternativeFunctions: add tests for namespaced names

Author: rodrigoprimo

WordPress/Tests/WP/AlternativeFunctionsUnitTest.inc

@@ -147,3 +147,27 @@ file_get_contents(
 	// Not using plugin_dir_path() for reasons.
 	$url
 ); // Warning.
+
+/*
+ * Safeguard correct handling of all types of namespaced function calls
+ */
+\curl_init();
+MyNamespace\curl_init();
+\MyNamespace\curl_init();
+namespace\curl_init(); // The sniff should start flagging this once it can resolve relative namespaces.
+
+/*
+ * Safeguard correct handling of namespaced parameters passed to file_get_contents().
+ *
+ * Note: the sniff should flag the examples using a fully qualified namespaced name and partially
+ * qualified name, but currently does not. This will be addressed via
+ * https://github.com/WordPress/WordPress-Coding-Standards/issues/2603.
+ */
+file_get_contents(\wp_upload_dir()['path'] . 'subdir/file.inc');
+file_get_contents(MyNamespace\wp_upload_dir()['path'] . 'subdir/file.inc');
+file_get_contents(\MyNamespace\wp_upload_dir()['path'] . 'subdir/file.inc');
+file_get_contents(namespace\wp_upload_dir()['path'] . 'subdir/file.inc');
+file_get_contents(\ABSPATH . 'wp-admin/css/some-file.css');
+file_get_contents(MyNamespace\ABSPATH . 'wp-admin/css/some-file.css');
+file_get_contents(\MyNamespace\ABSPATH . 'wp-admin/css/some-file.css');
+file_get_contents(namespace\ABSPATH . 'wp-admin/css/some-file.css');

WordPress/Tests/WP/AlternativeFunctionsUnitTest.php

@@ -89,6 +89,7 @@ public function getWarningList() {
 			131 => 1,
 			142 => 1,
 			146 => 1,
+			154 => 1,
 		);
 	}
 }